California program encourages adoption of zero-emissions vehicles

California’s Zero-Emission Vehicle (ZEV) program is expected to increase sales of electric, plug-in hybrid, and other alternative light-duty vehicles in the United States. The ZEV program is administered by the California Air Resource Board and affects model year 2018 and later vehicles, requiring automakers to earn credits for alternative fueled vehicles based on a percentage of their sales in California.
Source: Today In Energy